Assistant Professor of Radiology

Email: KHELMER@mgh.harvard.edu

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Recent Publications

• Gesierich B, Sander L, Pirpamer L, Meier DS, Ruberte E, Amann M, Sinnecker T, Huck A, de Leeuw FE, Maillard P, Moy S, Helmer KG, Levin J, Höglinger GU, Kühne M, Bonati LH, Kuhle J, Cattin P, Granziera C, Schlaeger R, Duering M. Extended Technical and Clinical Validation of Deep Learning-Based Brainstem Segmentation for Application in Neurodegenerative Diseases. Hum Brain Mapp. 2025 Feb 15. 46(3):e70141
• Liu X, Maillard P, Barisano G, Caprihan A, Cen S, Shao X, Jann K, Ringman JM, Lu H, Arfanakis K, DeCarli CS, Gold BT, Seshadri S, Satizabal CL, Beiser AS, Habes M, Kramer JH, Stables L, Singh H, Helmer KG, Greenberg SM, Wang DJJ. MRI free water mediates the association between diffusion tensor image analysis along the perivascular space and executive function in four independent middle to aged cohorts. Alzheimers Dement. 2025 Feb. 21(2):e14453
• Kern KC, Vohra M, Thirion ML, Wang DJJ, Wilcock DM, Thompson JF, Rosenberg GA, Sagare A, Moghekar A, Lu H, Lee T, Elahi FM, Satizabal CL, Tracy R, Seshadri S, Schwab K, Helmer K, Singh H, Kivisäkk P, Greenberg SM, Vossel K, Kramer JH, Maillard P, DeCarli CS, Hinman JD. White matter free water mediates the associations between placental growth factor, white matter hyperintensities, and cognitive status. Alzheimers Dement. 2025 Feb. 21(2):e14408
• Luckey AM, Ghosh S, Wang CP, Beiser A, Bernal R, Li Z, Mbangdadji D, Fadaee E, Snoussi H, Dediós AGV, Trevino HA, Goss M, Hillmer LJ, Bauer CE, Staffaroni AM, Stables L, Albert M, Himali JJ, Mosley TH, Forsberg L, Guðnason V, Singh B, Singh H, Schwab K, Kramer JH, Rosenberg GA, Helmer KG, Greenberg SM, Habes M, Wang DJJ, Gold BT, Lu H, Caprihan A, Fornage M, Launer LJ, Arfanakis K, Seshadri S, DeCarli C, Maillard P, Satizabal CL. Biological validation of peak-width of skeletonized mean diffusivity as a VCID biomarker: The MarkVCID Consortium. Alzheimers Dement. 2024 Dec. 20(12):8814-8824
• Liu X, Barisano G, Shao X, Jann K, Ringman JM, Lu H, Arfanakis K, Caprihan A, DeCarli C, Gold BT, Maillard P, Satizabal CL, Fadaee E, Habes M, Stables L, Singh H, Fischl B, van der Kouwe A, Schwab K, Helmer KG, Greenberg SM, Wang DJJ. Cross-Vendor Test-Retest Validation of Diffusion Tensor Image Analysis along the Perivascular Space (DTI-ALPS) for Evaluating Glymphatic System Function. Aging Dis. 2024 Aug 01. 15(4):1885-1898